SU458775A1 - Device for measuring the phase-frequency response of a magnetic recorder - Google Patents

Device for measuring the phase-frequency response of a magnetic recorder

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Publication number
SU458775A1
SU458775A1 SU1982397A SU1982397A SU458775A1 SU 458775 A1 SU458775 A1 SU 458775A1 SU 1982397 A SU1982397 A SU 1982397A SU 1982397 A SU1982397 A SU 1982397A SU 458775 A1 SU458775 A1 SU 458775A1
Authority
SU
USSR - Soviet Union
Prior art keywords
phase
measuring
frequency response
magnetic recorder
frequency
Prior art date
Application number
SU1982397A
Other languages
Russian (ru)
Inventor
Виктор Израилевич Вайсман
Сергей Владимирович Соколов
Гордей Иванович Иванов
Марк Владимирович Лауфер
Вадим Михайлович Зволинский
Павел Николаевич Фуфаев
Original Assignee
Предприятие П/Я А-3103
Предприятие П/Я Г-4056
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-3103, Предприятие П/Я Г-4056 filed Critical Предприятие П/Я А-3103
Priority to SU1982397A priority Critical patent/SU458775A1/en
Application granted granted Critical
Publication of SU458775A1 publication Critical patent/SU458775A1/en

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  • Recording Or Reproducing By Magnetic Means (AREA)

Description

при этом испытательный сигнал. При прохождении такого сигнала через тракт исследуемого аппарата магнитной записи кажда  составл юща  приобретает фазовый сдвиг, завис щий от ее частоты. На выходе полосовой фильтр 12 выдел ет удвоенную опорную частоту, котора  поступает на фазометр в качестве сигнала опорной фазы. На другой вход фазометра также поступает сигнал, обработанный с помощью выходного нелинейного элемента и полосового фильтра 10. При изменении в требуемом диапазоне частоты генератора 3 осуществл етс  измерение фазо-частотной характеристики исследуемого аппарата магнитной записи, а з св зи с тем, что колебани  скорости движени  магнитной ленты вли ют на фазы опорного и измерительного сигналов синфазно и в одинаковой степени, то и результаты измерений практически не завис т от указанных колебаПрелтмет изобретени  Устройство дл  измерени  фазо-частотиок характеристики аппарата магнитной записи, содержащее генераторы опорной и измерительной частот, подключенные к разным входам балансного модул тора, св занного через сумматор с исследуемым аппаратом магнитной записи , выход которого соединен через фильтр высоких частот и выходной полосовой фильтр с фазометром, отличающеес  тем, что, с целью уменьщени  вли ни  колебаний скорости двкл ени  магнитной ленты на результаты измерений и расщирени  частотного диапазона последних , оно снабжено входным и выходным нелинейными элементами, первый из которых подключен к точке соединени  балансного модул тора с сумматором, а второй - между фильтром высоких частот и выходным иолосовым фильтром, а также дополнительными полосовыми фильтрами, один из которых включен между входным нелинейным элементом и вторым входом сумматора, а второй - между точкой соединени  исследуемого аппарата маг1 итной записи с фильтром высоких частот и вторым входом фазометра.while the test signal. With the passage of such a signal through the path of the magnetic recording apparatus under investigation, each component acquires a phase shift depending on its frequency. At the output, the bandpass filter 12 selects a double reference frequency, which is fed to the phase meter as a reference phase signal. The other input of the phase meter also receives a signal processed using an output nonlinear element and a band-pass filter 10. When the frequency of the generator 3 changes within the required range, the phase-frequency characteristic of the magnetic recording device under investigation is measured, and because of the fact that the speed of movement varies magnetic tapes affect the phases of the reference and measuring signals in phase and to the same degree, then the measurement results are almost independent of the specified oscillations of the invention. phase-frequency characteristics of a magnetic recording apparatus, comprising reference and measuring frequency generators connected to different inputs of a balanced modulator connected via an adder to a magnetic recording apparatus under study, the output of which is connected through a high-pass filter and output band-pass filter with a phase meter, characterized by that, in order to reduce the effect of fluctuations in the speed of the double-drive of a magnetic tape on the results of measurements and expansion of the frequency range of the latter, it is provided with input and output nonlinear elements, the first of which is connected to the point of connection of the balanced modulator with the adder, and the second between the high-pass filter and the output and voice filter, as well as additional band-pass filters, one of which is connected between the input nonlinear element and the second input of the adder, and the second between the point of connection of the apparatus under investigation, magnetic recording with a high-pass filter and the second input of the phase meter.

SU1982397A 1974-01-02 1974-01-02 Device for measuring the phase-frequency response of a magnetic recorder SU458775A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1982397A SU458775A1 (en) 1974-01-02 1974-01-02 Device for measuring the phase-frequency response of a magnetic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1982397A SU458775A1 (en) 1974-01-02 1974-01-02 Device for measuring the phase-frequency response of a magnetic recorder

Publications (1)

Publication Number Publication Date
SU458775A1 true SU458775A1 (en) 1975-01-30

Family

ID=20571450

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1982397A SU458775A1 (en) 1974-01-02 1974-01-02 Device for measuring the phase-frequency response of a magnetic recorder

Country Status (1)

Country Link
SU (1) SU458775A1 (en)

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